Improvement in pumps



ISAAC N. FORRESTER, 0F BBIDGEPOR'l-, CONNECTICUT.

Letters .Patent No. 98,367

zaad December 28, 1869.

IMPROVEMENT IN PUMPS.

The Schedule referred to in these Latters'Patent and making part of the lame.

To all whom it may conce/rn Be it known that I, ISAAC N. FoRREsTER, -ot Bridgeport, in the county o't' Fairfield, and State of .Counecticut-, have invented certain new and useful Improvements in Pump-Valves, of which the followclass of pumps in which a moving cylinder is employed, Y

and to act as a delivery-valve, in connection with a stationary tubular rod, upon which the barrel moves, and which serves as a discharge-pipe.

My improvements consistin a metallic piston, truly fitted to the bore of the pump-barrel, and having a circular' flange upon its inner surface, which flange is iinished true and smooth at top and bottom.

The tubular pistou-rod of the pump is made in two sect-ions, whose adjacent ends are provided with flanges or collars, turned smooth, to serve as seats for the valve, and united by bolts, being maintained a sullicient distance apart by thimbles, to allow the same to riseand i'all far enough to deliver the water which passes through the receiving-valves to the tubular piston-rod, which acts as a discharge-pipe, as hereinafter more fully set forth.

In the accompanying drawings, which showa convenient arrangement of parts for carrying out the objects of my invention- A represents the barrel or cylinder of a pump, provided with upper and lower receiving-valves A1 A2, and reciprocated, by proper mechanism, upon a tubular piston-rod, composed of the upper and lower sections B B', and secured to fixed supports.

`ends of the sections B B', between which is placed piston-valve, C, fitted truly to the bore of the barrel, and having a circular flange, c, upon its inner surface.

The upper and lower surfaces of the ange c, and the adjacent faces of the flanges b b, are finished so as to make a water-tight joint when brought in contact.

The sections B B' are united by bolts b, which pass through thimbles b, of such length as to keep the flanges b bl far enough apart t-o allow the valve C the requisite amount of lilt, the flange c seating upon the flanges b b when the pump is operated. v

On the downward stroke of the pump, the water will entert-he lower valve A, and ll the space below the valve C, and on its upward stroke, this water will raise thevalve C, and be discharged through theupper sect-ion B of the tubular piston-rod, and the water v will enter thevalve A. and fill the space above the valve C. l

'lhis water will be'expelled nn the succeeding downward stroke, and so ou during the operation of the Dumlb I disclaim the combination of a piston-valve with a..

piston, reciprocating in a fixed cylinder. I claim as my invention, and desire to secure by Letters Patent-n The combination of the stationary tubular sectional /piston-rod and its flanges with. the vflanged pistouvalve and the reciprocating cylinder, all these parts being constructed to operate as Iset forth.

In testimony whereof, have hereunto subscribed my name. v

ISAAC N FORRESTER.

Witnesses:

Geo. S. PRATT, SAM. B. SUMNER. 

